Speaking of insanely expensive, Grunig made the one that I'm aware of (link below). Not sure if/how well it mounts to the Precise hardware, though. Anschutz may have made one, too, but I've never seen one if they did. If John Whidden doesn't know about it, I would reach out to Joe Hein at Elite Shooting Sports in Montana; he's been my go-to for some non-routine Anschutz parts, and is a great guy to work with. I believe he, too, shoots a Precise stock for his fullbore action, though I may be misremembering that.
I shoot a Precise for my smallbore stock, and decided to go with an Eliseo tubegun chassis for my Barnard instead. Price was definitely a factor (~$1000, as opposed to $2000+), but the fact that the tubegun chassis specifically allow the bolt to run underneath your cheek without special setup was a big plus (I shoot a very tall position in smallbore, so the added height from the tubegun was an asset for me). The only things the Precise has that the Eliseo doesn't is a cheekpiece that's adjustable for windage in position, and a laterally adjustable grip. The grip piece I don't miss: it takes AR grips, so there are loads out there, and building them up is fine with me. I also haven't missed the lateral cheekpiece adjustment in position, either. If you decided to go that route, I'm confident you could sell your Precise and more than finance your tubegun and new front sight. Square-action stocks have gotten hard to find of late, so the used market is quite favorable for sellers last I looked.
Good luck, and keep us posted!
http://www.edinkillie.co.uk/ecatalog/grunig-elmiger-black-iii-cheekpiece-p-1492.html
